We divide 81312577 by 638
Let's see how many times 638 fits into 81312577.

Going ahead to step 1:
The number 638 fits into 8 0 times, leaving a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 638

Going ahead to step 2:
638 can be fit into 81 0 times, resulting in a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Take the next digit (3) from the dividend and append it to 81, then repeat: 813 / 638

Advancing to step 3:
The number 638 fits into 813 1 times, leaving a remainder of 175.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 175 after subtracting 638 from 813.
Grab the next digit (1) from the dividend, add it to 175, then carry on: 1751 / 638

Advancing to step 4:
When dividing 1751 by 638, we get 2 with a remainder of 475.
Write down 2 as next digit of the result. 
Result so far: 12.0
If we take 1276 away from 1751, we end up with 475.
Grab the next digit (2) from the dividend, add it to 475, then carry on: 4752 / 638

Step 5:
The number 638 fits into 4752 7 times, leaving a remainder of 286.
Use 7 as the next digit of our solution. 
Result so far: 127.0
Subtract 4466 from 4752 to get 286.
Include the next digit (5) from the dividend after 286, then repeat: 2865 / 638

Moving on to step 6:
638 can be fit into 2865 4 times, resulting in a remainder of 313.
Put 4 as the next digit of the answer. 
Result so far: 1274.0
If we take 2552 away from 2865, we end up with 313.
Take the next digit (7) from the dividend and append it to 313, then repeat: 3137 / 638

On to step 7:
638 goes into 3137 4 times with a remainder of 585.
Record the quotient 4 as the next digit in the result. 
Result so far: 12744.0
The remainder is 585 after subtracting 2552 from 3137.
Append the next digit (7) from the dividend to 585 and continue with: 5857 / 638

Moving on to step 8:
5857 divided by 638 is 9 with a remainder of 115.
The number 9 becomes the next digit in our result. 
Result so far: 127449.0
If we take 5742 away from 5857, we end up with 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Moving on to step 9:
If we divide 1150 by 638, we get 1 and a remainder of 512.
Write down 1 as next digit of the result. 
Result so far: 127449.1
If we take 638 away from 1150, we end up with 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Advancing to step 10:
638 can be fit into 5120 8 times, resulting in a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 127449.18
The remainder is 16 after subtracting 5104 from 5120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 11:
160 divided by 638 is 0 with a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 127449.18
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 12:
If we divide 1600 by 638, we get 2 and a remainder of 324.
Record the quotient 2 as the next digit in the result. 
Result so far: 127449.1802
Subtract 1276 from 1600 to get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 13:
When dividing 3240 by 638, we get 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 127449.18025
The remainder is 50 after subtracting 3190 from 3240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 14:
The number 638 fits into 500 0 times, leaving a remainder of 500.
Put 0 as the next digit of the answer. 
Result so far: 127449.18025
The remainder is 500 after subtracting 0 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Let's proceed to step 15:
638 can be fit into 5000 7 times, resulting in a remainder of 534.
The next digit of our result is 7. 
Result so far: 127449.1802507
Deduct 4466 from 5000 and we're left with 534.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

Step 16:
The number 638 fits into 5340 8 times, leaving a remainder of 236.
Put 8 as the next digit of the answer. 
Result so far: 127449.18025078
Deduct 5104 from 5340 and we're left with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

The final result is 127449.18025078 with a remainder of 2.36e-07.